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Influence of Flux and Sulfur on YAG Laser Welding

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甘肃工业大学学报 2003年第4期29卷 11-14页

作者： K Nakata D Fan m tanaka m Ushio Joining and Welding Research Institute Materials Science and Engineering School Lanzhou Univ. of Tech.Joining and Welding Research InstituteJoining and Welding Research Institute Osaka University Osaka 567 JapanLanzhou730050 ChinaOsaka University Osaka 567 JapanOsaka University Osaka 567 Japan

The influence of flux and sulfur content on YAG laser welding has been investigated, and the influencing factors and mechanism were discussed. The results show that both surface activating flux and surface active element S have fantastic effects on the YAG laser weld shape, that is to obviously increase the weld penetration and D/W ratio in various welding conditions. The mechanism is thought to be the change of surface tension temperature coefficient in weld pool, thus, the change of fluid flow paten in weld pool due to the flux and sulfur.

关键词：激光焊接硫光纤波长 YAG激光器

Helix Induction to Polysilane Chain Upon Wrapping by Sugar Derivatives and Related Chemistry

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复旦学报（自然科学版） 2007年第5期46卷 618-619页

作者： m.tanaka T.Sanji Nobu Kato Y.Sato Chemical Resources Laboratory Tokyo Institute of Technology 4259-R1-13 NagatsutaMidori-ku Yokohama 226-8503Japan

1 Results Helix induction to polymer chains is an active area of research these days. In most cases,optically-active units are attached to the polymers to induce helical conformation. Scheme 1Since the properties of σ-conjugated polymers like polysilanes are dependent on the conformation of the chain,it is particularly interesting to induce helix to oligo-and polysilanes. We have been working on the helix induction by host-guest complexation with sugar derivatives such as cyclodextrine and *** l...

关键词： polysilane inclusion complex helix supramolecular chemistry

Optimal Dispersion of NZ-DSF in 40 Gbit/s DWDm Transmission

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光学学报 2003年第S1期23卷 535-536页

作者： m. tanaka J. Kobayashi T. Okuno E. Sasaoka Y. Araya E. Tsumura m. Shigematsu Sumitomo Electric Industries Ltd. 1 Taya-cho Sakae-ku Yokohama 244-8588 Japan

Numerical and experimental verification of optimal dispersion of NZ-DSF in 40Gb/s-based DWDm transmission are performed using 240km simple transmission line. The results show that dispersion of +8ps/nm/km is effective... 详细信息

关键词： experimental verification transmission line

DR-3355(氟嗪酸光学异构体)的体外与体内抗菌作用

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国外医药（抗生素分册） 1992年第1期13卷 53-57页

作者： tanaka m 张永信

DR-3355[S-(-)-ofloxacin]和 DR-3354[R-(+)-ofloxacin]均是氟嗪酸的光学异构体(图1),现已成功地从合成的中间体中分离出。氟嗪酸为 S 和 R 异构体1:1的消旋混合物,其分子带一份水,而每一异构体只带半份水。

关键词：氟嗪酸光学异构体抗菌作用

YAG laser welding with surface activating flux

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China Welding 2003年第2期12卷 83-86页

作者：樊丁张瑞华田中学中田一博牛尾诚夫 The State Key Laboratory of New Non-ferrous metal materials Lanzhou University of Technology Lanzhou 730050 Joining and Welding Research Institute Osaka University Osaka Japan

YAG laser welding with surface activating flux has been investigated, and the influencing factors and mechanism are discussed. The results show that both surface activating flux and surface active element S have fantastic effects on the YAG laser weld shape, that is to obviously increase the weld penetration and D/W ratio in various welding conditions. The mechanism is thought to be the change of weld pool surface tension temperature coefficient, thus, the change of fluid flow pattern in weld pool due to the flux.

关键词： YAG laser laser welding surface activating flux weld shape weld penetration

Behavior of Impurity Elements in Electrolytic Copper in Copper Recycling by Using Ammoniacal Alkaline Solution Containing Cu（I）

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Behavior of Impurity Elements in Electrolytic Copper in Copp...

Lithium plus valproate for traumatic brain injury

第八届东亚资源再生技术国际会议

作者： K.KOYAmA m.tanaka m.KOBAYASHI T.SEKINE J.LEE National Institute of Advanced Industrial Science and Technology（AIST） 16-1 Onogawa Tsukuba Ibaraki 305-8569 Japan National Institute of Advanced Industrial Science and Technology（AIST） 16-1 Onogawa Tsukuba Ibaraki 305-8569 Japan National Institute of Advanced Industrial Science and Technology（AIST） 16-1 Onogawa Tsukuba Ibaraki 305-8569 Japan Department of metallurgical Engineering Chiba Institute of Technology 2-17-1 TsudanumaNarashino Chiba 275-858 Japan Korea Institute of Geoscience ＆ mineral Resources（KIGAm） 30 Gajeong-dong Yuseong Daejeon 305-350 Korea

＜正＞Behaviors of nickel and silver in the electrolytic copper were investigated in order to obtain high purity copper in the recycling system from metallic wastes by using ammoniacal alkaline solution containing Cu（I）. Both nickel and silver were found to be stable in Cu（I）-ammine solution from potential-pH diagrams. The nickel concentration in the electrolytic copper was reduced with a decrease in the nickel concentration in the aqueous solution. It was less than *** when the nickel concentration in the solution was less than 0.01 kmol m-3 and the current density was less than 500 A m-2. The cathode potential for the deposition of silver was around -0.1 V vs SHE which was higher than that of copper. The silver concentration in the electrolytic copper was less than 25ppm when the silver concentration in the solution was less than 7.4×10-5 kmol m-3 and the current density was less than 500 A m-2.

关键词： Cu recycling electrowinning impurity Cuprous ion

来源： cnki会议评论

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中华物理医学与康复杂志 2013年第12期35卷 951-951页

作者： Yu F Wang Z tanaka m

BACKGROUND AND OBJECTIVE In animal models,sub-effective doses of both lithium and valproic acid(VPA)have shown considerable neuroprotective effects in central nervous system diseases,including traumatic brain injury(TBI),by inhibiting glycogen synthase kinase-3(GSK-3)and histone deacetylases(HDACs),*** animal study assessed the efficacy of combining low doses of these two medications for the treatment of *** One hundred twenty-six male mice underwent induced TBI at eight weeks of *** animals were treated with subeffective doses of lithium,VPA or a combination of lithium and VPA,beginning 15 minutes post-TBl and once daily thereafter for up to three *** volume was measured at three days post-injury,In addition,the animals were tested for blood brain barrier integrity,for function,with a beam walk test,for neuro-degeneration via Fluoro-Jade B staining,and for protein levels of acetylhistone H3,phospho-GSK-3β,andβ-catenin via Western blotting.

关键词：康复医学临床诊断物理医学

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脉管制冷机冷端换热器的改进

低温工程 1999年第2期 5-9页

作者：邱利民陈国邦 m.tanaka T.Hata 浙江大学制冷与低温研究所杭州310027 大阪市立大学理学部低温物理研究室大阪市立大学学理学部低温物理研究室

为了进一步提高脉管制冷机在液氮温区（７７Ｋ）的制冷量，本文对脉管冷端换热器进行了改进，同时还对脉管冷端气流的平均温度进行了测量。实验结果表明，常规脉管制冷机冷端换热器中的换热面积是不足的，脉管制冷机冷端换热器的传热损... 详细信息

为了进一步提高脉管制冷机在液氮温区（７７Ｋ）的制冷量，本文对脉管冷端换热器进行了改进，同时还对脉管冷端气流的平均温度进行了测量。实验结果表明，常规脉管制冷机冷端换热器中的换热面积是不足的，脉管制冷机冷端换热器的传热损失较大，在设计计算中不应忽视。采用高目数的换热器填料有利于降低脉管冷端壁面与冷端气体之间的温差，从而提高冷端换热器效率，进而提高液氮温区脉管制冷机效率。

关键词：脉管制冷机换热器效率填料传热损失

High Pressure Structural Study of Phase A,mg7Si2H6O14 Using Synchrotron Radiation

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High Pressure Structural Study of Phase A,Mg7Si2H6O14 Using ...